Work-holder.



Attorneys Zdmzd Zflahrey; ma ia Witnesses 0 farm/1.4m

E. WEHNEB. WORK HOLDER.

APPLICATIGN HLED NON. 18, I916- Patented July 31, 1917.

Witnessesd I r A 7mm Attorneys EDWARD WEI-INER, or ANN ARBOR, MICHIGAN,ASSIGNOR or ONE-HALF TO ELBERT v.

GHILSON, or ANN ARBOR, MICHIGAN.

WORK-HOLDER.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed November 18, 1916. Serial No. 132,115.

To all whom it may concern:

Be it known that I, EDWARD /VEHNER, a citizen of the United States,residing at Ann Arbor, in the county of \Vashtenaw and State ofMichigan, have invented a new and useful Work-Holder, of which thefollowing is a specification.

The device forming the subject matter of this application is a workholder, adapted, to retain rungs, spindles, spokes and'the like Whilethe same are being rounded or tenoned on the end, by a chuck driven orrotated in a machine, in any suitable manner.

The invention. aims to provide novel means whereby the article which isto be rounded or tenoned on the end, is held in' place during therounding or tenoning operation.

Another object of the invention is to provide a swinging frame which,holding the spoke or other object, swings forward to permit the articleto enter the chuck head.

The invention aims to provide novel means for returning the frame to itsinitial or original position.

It is within the province of the disclosure to improve generally and toenhance the utility of, devices of that type to which thepresentinvention appertains.

With the above and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 shows in side elevation, a workholder embodying the present invention;

Fig. 2 is a top plan of the work holder, parts being broken away inFigs. 1 and 2;

Fig. 3 is an end elevation of the work holder;

Fig. 4 is a vertical section of the work holder, on the line 44 of Fig.3, parts appearing in elevation; and

F 5g. 5 is a horizontal section on the line 55 of Fig. 4.

The device forming the subject matter of this application includes asupport 1 carrying a table 2, one end of which, denoted by the numeral3, projects beyond the support 1. The end 3 of the table 2 is providedwlth'stops 4 at its sides. The numeral 5 denotesa U-shaped frame heldbyone or more securlng elements 6 to the table 1. The arms of theU-shaped frame 5 are supplied with openings 7 through which passes abolt 8 carrying a rotatable sleeve 9 located between the arms of theframe 5.

The numeral 10 denotes an inverted U -j shaped frame which straddles abracket 12 projecting forwardly from the support 1 near to the lower endof the support. The bracket 12 has notches 11 in its sides, in which thearms 10 of the U-shaped frame 10 are received for vertical adjustment,but against tilting movement. The bracket 12 is held to the support 1 bymeans of one or more securing elements 14. Mounted in the top of theU-shaped frame 10 are rods 15, carrying nuts 16 which engage the upperand lower faces, respectively, of the top of the frame 10. The upperends of the rods 15 pass through a bar 17 held against a lug 18 on thebottom of the end. 3 of the table2, by a bolt 19 or the like. There areheads 20 on the upper ends of the rods 15, the heads 20 being boundbetween the lower face of the lug l8 and the bar 17 The rods 15,therefore, cannot move upwardly, but by adjusting the nuts 16 on therods, the U- shaped frame 10 may beraised and lowered, the said framesliding in the notches 11 of the bracket 12.

A pivot element, preferably in the form of a rod 21, passes through thelower ends of the U-shaped frame 10, below the bracket 12. On the endsof the rod 21 are pivoted the depending arms of an inverted U-shapedframe 22. The frame 22 may be swung rearwardly, against the action of aspring 23 attached to the forward face of the support 1 and bearing onone arm of the frame. The arms of the frame 22 engage with the stops 4on the edges of the end 3 of the. table 2, under the action of thespring 23.

Superposed on the upper end of the frame 22 is a rectangular, relativelyfixed jaw 24, in the base arm of which is formed an elongated slot 25. Abolt or like clamping elebracket 28 carrying a pivot element 29 on whichis mounted to swing a movable jaw 30, overhanging the top of the frameThe jaw 30 is provided at its inner end, and at its top and bottom, withelongated fingers 31 and between the fingers 31, the end of the jaw 80is supplied with teeth 32. A spring 33 is penetrated by the bolt 26which holds the movable jaw 24 in place, and is hound between the baseof the jaw 24 and the top of the frame 32, as Fig. 3 will make evident.The free end of the spring 33 engages beneath the jaw 30 and tends tolift the jaw.

In practical operation, the article which is to be rounded or teno'n ed,is placed between the movable jaw ESQ-and the upright arm of the fixedjaw 2a, the work being pushed down so that it is,bound against the teeth27 of the fixed jaw, and is engaged by the teeth 32 of the movable jaw'30, between the fingers 31. The article passes beneath the sleeve 9. Byswinging the frame 22 from the solid line position of Fig. 4 to thedotted line position, theworlr may he advanced so that it will cooperateproperly with the chuck. The spring 23 serves to return the frame 22 tothe solid line position of Fig. 4;, after the tenoning operation hasbeen carried out. A The roller 9 may be shifted vertically in the holes7 of the frame 5,'s0 that the article which is being tenoned will bepositioned properly with respect to the tool whereby the end of thespoke or rung is rounded.

As hereinbefo-re stated, it is possible to Copies of this patent may be-bbta'ined for live cents each, by addressing the and 24, bymanipulating the "nuts 16 'on the I rods 15.

Having thus described the 1nve ntion,what

vis claimed is 1. In a device of the class described, a supportingstructure; a guiding means superposed on the supporting structure; aframe mounted on the supporting structure for raising and lowering;means for raising and lowering the said frame; a second frame pivoted tothe first specified frame; spring means for advancing the last specifiedframe; a stop on the supporting structure and limiting the advancingmovement of said frame under the action of the spring; :a relativelyfixed jaw on the second specified frame; and a movable jaw on the saidframe and coactin g with the fixed jaw.

2. In a device of the class described, a

a guiding means supporting structure; thereon; a frame mounted to swingwith respect to the supporting structure, toward and away from theguiding means; coaoting jaws carried *by the frame; and means forraising and lewei-ing said frame.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

EDl/VARD WVEHNER.

Witnesses:

ELME R BURNS, E. V. GHILSON.

Weshington, D. 0.

Commissioner of Iatents,

